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djverab [1.8K]
3 years ago
14

The sum of a number, n, and 8 is multiplied by -4, and the result is -12.

Mathematics
1 answer:
forsale [732]3 years ago
4 0

Step-by-step explanation:

The number n is - 5

Because the sum = 8 + (-5) = 3

After multiply by - 4 = 3 x - 4 = - 12

Option A is the correct answer

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Solve for z 3=(z+1) write your answers as integers or as proper or improper fractions
ch4aika [34]

Answer:

z=2

Step-by-step explanation:

Just solve

1 + z = 3 (minus 1 on both sides)

z = 2

Plug in

3=(2+1)

3 = 3

7 0
4 years ago
A teacher summarizes grades on an exam by,Min = 26, Q1 = 67, Q2 = 80, Q3 = 87, Max = 100, Mean = 76, Mode = 100, Standard deviat
chubhunter [2.5K]

we have

Min=26

Q1=67

Q2=80

Q3=87

Max=100

Mean=76

Mode=100

standard deviation=76

IQR=20

so

In this problem

the mean is equal to the standard deviation

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5 0
1 year ago
Can someone help out ??
kupik [55]

Answer:

120 cubes

Step-by-step explanation:

Find the volume of the prism and then divide it by the volume of one cube (which is 1/27 cm):

V = length*width*height = (5/3 cm)(4/3 cm)(2 cm) = 40/9 cm³.

Dividing this result by 1/27 yields

40       27         40*3    

------ * ------ = -------------- = 120

  9        1               1

120 cubes (answer)

7 0
3 years ago
Fill in the blank.
Marrrta [24]

Question:

Fill in the blank.

23 x 6 = (20 + 3) * 6

23 x 6 = _ + (3x6)

Options

20 * 6

20 * 3

20 * 5

Answer:

20 * 6

Step-by-step explanation:

Given

Expression 1:  23 * 6 = (20 + 3) * 6

Expression 2:  23 * 6 = __ + (3 * 6)

Required

Fill in the blank

From Expression 1

23 * 6 = (20 + 3)*6

Using Distributive Property; The expression becomes

23 * 6 = 20 * 6 + 3 * 6

23 * 6 = (20 * 6) + (3 * 6)

By Comparing this with expression 2

23 * 6 = __ + (3 * 6)

The blank position is occupied by 20 * 6.

Hence, the correct option that fills the missing blank correctly is 20 * 6

7 0
3 years ago
What are the roots of the equation x^2+4x-5=f(x)
enyata [817]

Answer:

The roots are -5, 1.

Step-by-step explanation:

f(x) = x^2 + 4x - 5

The roots of a function are also the Ox intercepts, so basically we're finding when is the function equal to '0'.

x^2 + 4x - 5 = 0\\(x-1)(x+5) = 0\\x_1 = 1, x_2 = -5

3 0
3 years ago
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